Reinforced-concrete pile for pier and foundation construction.



I 0. B. LAMBURTH REINFORCED CONCRETE PILE FOR PIER AND FOUNDATION CONSTRUCTION.

APPLICATION FILED pow. 22, 1908.

v Patented Nov 23,1909;

INVENTOR. Cqssz'as 2 Lamburfi,

- WITNESSES.-

I A TTORNE Y.

eassIUs'iia/AMBUnrH, or SAN FRnN'cIsco, CALIFORNIA. j

REINFORCED-CONCRETE Pr'L E fort ER AND romnarron cons'rmrc'rron.

: V Specification. of Letters Patent.

Application filed October 22, 1908. SeriaL No. 458,967.

To all whom it may concern:

Be 1t known that I, GASSIUS E. LAMBURTH,

a citizen of the United States, residing at creterpiles for pier and foundation conthe city and county of San Francisco and State of California, have invented new and useful Improvements in Reinforced-Concrete Piles for Pierliand Foundation Construction, of which the following is a specification,

My invention relates to reinforced construction.

. s1mple,practical, and

. struction, together with means for placing The :object of the invention is to devise a comparatively cheap system of piles for pier and foundation con- 1 and anchoring these concrete piles.

' tion The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure 1' is a section of the inventions (elevation).

Fig. 2 is a detail of top cap, Fi 3 is a plan of same. Fig. 4 is a detail ofiottom cap' (elevation). Fig. 5 is a secon line Fig. 6 is a section on line wm. Fig. 7 is an enlarged broken sectional View of a portion of the pile showing the concrete removed from parts of-the rein-' forcing members.

A re resentsone of my reinforced concrete piles which may. be of any length,

sh'apeor diameter, witlra centralop ening 2 extending lengthwise throu h it from end -to end. The pile is i'jelferabl Y rectangular in cross-section an "tapere lengthwise,

' with the lower end of the-pile provided with walls of the I a baseplate 3 corresponding in exterior outline to the lower end of the dpile, and having a central openipg correspon ing tothe opening 2- in the pile and designed to accommodate the pipe 4; which latter forms the opening 2. The. baseplate 3 has a wardly extending flange '5 projecting below the lower end of the plate with reinforcing ribs (3 at suitable intervals. These ribs 6 at the corners are made with suitable seats 7 and are gored out to pass the reinforcing rods or b rs 8 which extend lengthwise through the body of the pile. 'Nuts"9 screw on to the lower ends of these rods and seat on the seats 7. i

Inthe making up of the pile proper, any

, suitable formof a mold ,is employed, and

' pile-is taken out.

necessary here to be shown, may .be em-' Central down-' "in this mold a skeleton reinforcing frame- Work is set up consisting of the bars 8, in-

Patented Nov. 23, 1909.

termediate longitudinally-extending bars 10 and the central pipe 4.

Around the bars 10 a suitable wire fabric 11 is wound, includin rectangular'area. outsi e of the-pipe 2. A second and similar wire fabric 12 is wrapped around the outer series of bars 8, and' then all these bars and the pipe 4 are firmly em as here shown, a

bedded in a packing'of cementor concrete to be placed in po-- pumping tools of suitable description are or rock; the p1 e sinking, or being'forced down as the material belowthe Any suitable ploycd to place or force the pile to a sufficient distance, If desired, awooden pile having a diameter sufficient to'allow it to passdown through the central opening 2 of my hollow concrete pile may then beinserted into this concrete pilev and driven down into the mud or earth beneath, as represented at 14, leaving any desired portion of the wooden pile stickin up into the c0ncrete pile, andthus affor ing a substantial anchorage for the same. of the wooden pile is then filled with concrete, as represented at 15. Under some circumstances, a wooden pile may be first driven down and then my concrete pile slipped down over it; the s ace-on top of the wooden pile then being lled with concrete. Under some circumstances, wooden pile anchorage may be entirely dis-' wnward pensed with, in which case my concrete pile,

sunk .to a suitable after being forced or depth to-sustainthe load,'is filled with concrete.

portion of it filled with concrete, or other suitable material, the top of the pile is crowned with a suitable metal cap, as represented at;16. This cap or crown plate preferably has an inside circular flange 17 The space on" top When the pile is. placed, and the hollow sent downthrough the openin 2 to remove .the mud, sand,

means notl the to fit' inside the hollow concrete pile, and a cap 18 of a size a proximately that of the his cap plate 18 prefer- ,plrttes suitably spaced opening 20 exto of the pile. ab y comprises two by the webs 19, with a central tending through the plates,' through which concrete may be poured into the top of the pile to" fill any remaining space, therein. On top Dig-i118 crown plate 16 are laid the beams, and fastened thereto by suitable means; and any form of flooring or superstructure may be placed on these beams.

Since these piles are comparatively cheap.

long and heavy, that posite narrower sides a bu go or swell between the ends,

as shown in Figs, 1 and 6; the additional body of concrete afforded by this bulge or swell giving additional strength at the center of the pile. At the same time, making the pile rectan lar in cross section and g ving it this ad itional swell in the manner described, allows the piles to be set and braced in forming a pier or foundation construction, in a much more substantial manner than by, the use of square piles or round piles; since the diagonal brace piles may be laid against the flat wide'isides of my improved piles and secured thereto to best advantage.

Having thus'describcd my inventionpvhat- I claim and desire to secure by Letters Pat cut is v 1 A concrete pilehaving an axial open ing through it, lengthwise extending reinforcing rods embedded in the body of the concrete between said central opening and the outer wall of? the pile, a metal tube em- .and forminp' and two cyi engaging to enable them to vals forming seats bedded in the concrete interior to said rods the wall of and axial oiening,

in the body of concrete and assing around the exterior of the rods, the abric cylinders alternate rods whereby one cylinnders of wire fabric em added der is arranged within the other and the" sides of one cylinder are diagonal to the sales of the other cylinder.

2. In a hollow reinforced concrete pile comprising a body of concrete having creel" tral opening extendin from end to end,. metal reinforcing mom iers arran ed long tudinally of the pile and wire fa iric cylin- -ders surrounding said members, a base plate the pile rests,

upon which the lower end'of said base plate having a downwardly tending flange with reinforcing ribs at lnterfor the reinforcing mem' bers, certain of said members] extending through said ribs, and means or fastenin the ends of said members to the basic gill/tie.

3; In a hollow reinforced concrete pile comprising a body (it concrete having a coil.- tral opening (BXtQlldlXl from onci jto cud, metal reinforcing mem )[EI'S arr n edolongitudinally of the pile and wire In )ric cylinders surrounding said membcrs', a baseplate upon which the lower end of the pile rests, said base plate" having a downwardly extending flange with reinforcing ribs at intert'or the reinforcing members, certain of said members extending through said ribs, means for fastening 'the ends of said members to the base plate, and a cap plate of metal fitting on top of the pile and having a central oponin to r ister with the openin" th rou h thc pile andii da t ed to admit a filling o concrete to close t 1e central opening of said pile, said cap plate havin an .inside flange adapted to enter the top 0 the central opcnin" of the pile. In testimony whereof have hereunto set, my hand in presence of two subscribing witncsscs.

GASSlUS E. LAMBURTH. Nitncsse v JAm'ai-i Mason,

B. De VoNni' vals forming seats 

